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Overunity Machines Forum



Tesla's "COIL FOR ELECTRO-MAGNETS".

Started by Farmhand, April 21, 2013, 09:00:24 AM

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0 Members and 17 Guests are viewing this topic.

sparks

   My feeling on where the magnetic field of the Earth comes from is that the core of the Earth is not solid or liquid but is a piece of ejected solar plasmasphere spinning round and round.   The entire core is spinning and the electrons move as they would in a coil.  This causes magnetic field effects.  The big magnetosphere.  This plasma current is not uniform by any stretch of the imagination.  It appears to have taken on many states of angular momentum and polarity over the ages.  This may be due to solar activity where the solar magnetic field changes intensity and polarity.  The plasmasphere currents on the Sun create many magnetic poles.  Some people belive that they have found various rhythmic field strength changes but 8 or 20 minute cycles in the order of microteslas isnt very much power.
Think Legacy
A spark gap is cold cold cold
Space is a hot hot liquid
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gyulasun

Quote from: synchro1 on May 18, 2013, 08:54:13 PM
I just returned from the shop where I re-ran the experiment and captured nine still shots with my cell phone. The Tesla series wrap bifilar raises two long "trombone" steel paper clips, while the single wrap raises merely one. The single wire model dosen't even come close to attracting a second paper clip. Zero cling on the second clip, while the SBC cleanly raises two whole paper clips high over the test bench. Try charging the SBC like "Leedskalnin's" PMH first, then repeat the experiment with the SBC raised to full potential.
....

Please show me where did Tesla write his coil construction (defined in his patent) is to be charged first with high voltage and then use it with a lower voltage?

Did you check whether the nail manifested a remanent magnetism after your 12V charge up treatment? (I am not saying your nail manifested remanence magnetism, just a possibility for explaining your test result.)

When I did my own tests first with paper clips I noticed that due to the inherently very small touching surfaces of the clips the tests were not fully convincing for me, even though the difference in the number of lifted clips was evident,  and when I repeated the tests  I decided to change the clips to small sized nuts: http://www.overunity.com/11350/confirming-the-delayed-lenz-effect/msg357952/#msg357952 
So the small nuts have made the tests more convincing for me and more repeatable.  I suggest you also use small nuts or just cut up your "trombone" clips to many small (say 3 or 4 millimeter long) pieces and do the tests again. 

Here is your post from last night and I highlighted some words in your text I wish to answer:

Quote from: synchro1 on May 18, 2013, 04:48:13 PM
I just re-performed "Tesla Coil's" bifilar nail experiment and got his 2x the strength results. Two problems: one; Lash winding and Two; Failure to energize the SBC are reasons I suspect that caused the other experimental failures. 

Precise and tight wire wraps are essential in this experiment. This is how Tesla earned a patent for an electromagnet coil. He had to demonstrate a practical advantage to his U.S. Patent examiners. Also, the SBC won't work cold! It has to be "Energized". I charged both the SBC and the single wire coil with 12 volts, and tested their field strengths with 6 volts. After energizing the SBC, it lifted two paper clips from the table surface, where the single wire coil would only attach one to the face.
"Lorentz" explained how this additional magnetic strength results from electron interaction in the SBC.

Well,  see the first picture Magluvin uploaded in his post here:
http://www.overunity.com/13460/teslas-coil-for-electro-magnets/msg359705/#msg359705
He has wound nice coils, precise and tight, no lash winding on his nails, right?  And he did find equal performance for the single and the bifilar (SBC) coils just like I did with my 'lash' winding.  So we got the test results independently from whether the windings were precise or lash, right? 

Gyula

Farmhand

Dang, Looks like I missed a lot, I got entranced by my experiments, I've made significant headway towards understanding what I'm doing. I found I had a bad diode which was causing bad wave forms and bad performance.

Tinsel, Your point (6) about resonance in a pulse motor, I think there is already people claiming resonant pulse motors but I'm not sure what is the actual claims. Some say resonance is just the return of energy that builds system potential or energy some say otherwise. I want it all, I want sine waves from pulses and energy returned when the frequency means no sine waves. In other words the harmonics should not interfere, they are processed in a way. It is difficult to get the visual out of my head for people to grasp I guess, I think you get it though.

I now have a nice "h" wave with a flat top without a charge battery and efficient high speed running with no load and no charge battery but using a charge battery is still a bit better and the reason is that the battery makes the currents look smoother, the return set up makes waves, but it just a matter of tuning the circuit. If the capacitor is small the voltage on the drain at the discharge portion of the "H" wave is high and short so the current is more intense but shorter (kinda like when a charge battery is used), and like with a battery, when really feeding in the power fast I get a steep climb in voltage on the drain which fires the neons and noise upsets the picaxe which shuts down the boost converter (I think) and that drops the input.
If I feed power in slower and speed the rotor up slower I get the fastest speeds with a charge battery followed closely by my return setup, but if I snub the fly back to the supply or around the coil it just will not accelerate.

I get the best result as far as loading goes when I use a larger return capacitance so that the drain voltage stays lower, however I intend to replace the NE2 neons with 220 volt gas discharge tubes from the drain to ground for now but I think that is a bad idea I think a safety valve from the drain back to the supply might be better, I think in my setup the circuit noise is causing me problems when it becomes too much so I need to keep it in mind.

I think for pulse motors they can be kinda like a self triggered (pseudo synchronous motor) because when I switch in the extra charging capacitance that the charging coils empty into the frequency and speed of the motor slow quickly as a result of the braking effect from the change in phase of the charging coil current. Kind of synchronous to it's circuit frequency.

I'll get a shot of one of my (h) waves. in a minute. I'll need to make another post to reply more anyway.

The way I see it even an ordinary pulse motor of any kind if the pulses make sine waves then I see no reason why it cant be smooth quiet and powerful. Now when I get to high speed the most noise comes from the windage on the rotor, it's full of holes, can hardly hear the pulsing, still not properly balanced though. I'm going to take most of the current video clips down because they are now obselete. I can easily out perform the 18 Watt fan that beat me last time. And considering my motor is much bigger it should beat it for efficiency with the same load. The main thing is I need the computer control, once I get command of all variables I think I can make it work well.

Head down making progress. I'll get the shot. First thing.

Oh I was also only running on three bangs a revolution too, my sensor was ignoring one reflector strip because it was too small.  >:(

Cheers

These wave forms show why I chose to use a resonant charging circuit and how I made the inductive energy return to try to match the effects of a charge battery.

It's quiet because the powerful rectangle pulses are just adding to a sine wave, the sine wave is driving the rotor.  :)

New clip of quiet running unloaded. (except for the wind noise sorry bout that).  :P
http://www.youtube.com/watch?v=mrlL099cz2Q

...

Farmhand

Gyula, My Tesla transformer primary circuit doesn't use a series capacitor, ( I used to) but the setup now is as the drawing shows, but there is the spark gap in the positive HV line to the primary.
The spark gap can be two shorting bars out of phase or one. It's a very narrow series gap due to the design and I have three points to use on the gap two in phase and one out of phase so I can use two in series if I want, one is good.

Anyway the primary caps in a resonant charging circuit which is the diode the charging inductor (a MOT secondary) and the primary capacitors, if the resonance between the charging inductor and the primary capacitor is too low then the power is restricted. If the charging inductor does not have enough inherent inductance then the spark discharge can draw energy directly from the supply through the charging inductor then the primary. At reonance we get the highest voltage into the HV primary capacitors, the resonance is between the charging inductor and the primary capacitors all the time, but the capacitors are only in parallel with the primary when the gap is conducting, and never in series. Because of the circuit design.  This is true of all two way blocking switches in such an arrangement. But not one way (blocking) switches like mosfets. Maybe why IGBT is preferred dunno. Sorry for the highlighting.  :-[

I have series inductors.  ;)

We can also see by my drawing there that the infamous "Avremenko plug" is nothing more than half of a FWBR and a capacitor ect. . I use A FWBR in two halves which are exactly the same as the diode arrangement for an "Avremenko plug" .

Cheers

P.S. Most of the microwave oven transformers I have posses about the same figure as the supply voltage in mH ie. mine are 236 mH so with 39 uf I am close to 50 Hz resonance for the power factor to be good. It drops the line voltage a bit too I noticed whatever that means. But I can get reliable power measurements behind the 240 line filter at the control box.  So no real interference back through the supply lines. I think that's important to do without using a lot of resistors. For efficiency.


C7-C8-C9 and C10 are my primary capacitors there are no others. the primary swings freely, it's just one turn of two 6 mm copper tubes 5 mm below the secondary.

The thinking is that having primary "resonance capacitors" always connected would lower the "q" factor of the secondary which is high because of the 1 mm wire, very little resistance. I figure it at almost 4000. 760 kHz. I can't recall the exact measurements to post.
..




gyulasun

Hi Farmhand,

Thanks for returning to the series or parallel cap topic at the Tesla primary coil,  (it has been okay with me) the fireing spark gap put the capacitor in parallel with the primary and the cap was discharged by the primary in that moment. What you show now in the drawing I understand too.
It is interesting you mention Avramenko plug as half of a FWBR and indeed the two diodes' half  seem to copy two 'plugs' but remember an Avramenko plug is driven by a single wire while the FWBR (or half of it) is driven by two wires,  so this difference must have a different loading effect on the source.

Gyula